A great example of using printing technology in advertising.

When I was young, I loved having those rulers where the picture changed depending on what angle you looked at it - I remember both a dinosaur and a football version! I'm not sure whether they used the same "lenticular printing technology" as this billboard but the message and the method is a very powerful one.

The poster looks different to kids and adults, the key factor being how tall you are. Adults see the "normal" version which is just a boy's face along with a warning about hidden child abuse. However, viewing it from a child's perspective brings out cuts and bruises on the face and information on how to get help.

The youtube video is below and without wanting to distract from the serious message of the campaign, I am looking forward to tutor2u producing some resources using lenticular printing - perhaps some shifting demand curves depending on the angle viewed?